The wife of US Representative John F. Tierney is poised to plead guilty tomorrow to federal tax charges for managing a bank account that her brother allegedly used to deposit millions of dollars in illegal gambling profits he raked in from an offshore sports betting operation in Antigua.

Patrice Tierney, 59, who is married to the Salem Democrat, is charged with four counts of aiding and abetting the filing of false tax returns by her brother, Robert Eremian, of St. John’s, Antigua.

The US Attorney’s office said she is scheduled to plead guilty tomorrow afternoon.